The Knight of Darkness investigates deadly vampire attacks in two heart-stopping chillers by Walter Gibson writing as "Maxwell Grant" and a classic radio mystery!

First, the Master of Darkness must battle a giant vampire bat and enter the dangerous "Garden of Death" to discover the secret behind a deadly drug monopoly. Then, The Shadow enters haunted Haldrew Hall to unearth the bloody secret behind "The Vampire Murders" in a sequel to the legendary Victorian thriller, "Varney the Vampire."

BONUS: "Vampires Prowl by Night," a lost thriller from the Golden Age of Radio!

This instant collector's item showcases both classic pulp covers by George Rozen, the original interior illustrations by Paul Orban and commentary by popular-culture historians Anthony Tollin and Will Murray.